Last updated 23 August 2026
The limits used here
- X (Twitter) — 280 characters
- Instagram caption — 2,200 characters
- Facebook post — 63,206 characters (practically unlimited, but shown for completeness)
- LinkedIn post — 3,000 characters
- TikTok caption — 2,200 characters
- YouTube title — 100 characters
Platforms occasionally adjust these, so treat the numbers as a close, current guide rather than a permanent guarantee.
Common questions
Why check against every platform at once?
Most people write one caption and post it everywhere. Checking all the limits at the same time shows immediately which platforms are fine and which will cut the post off, instead of checking each site separately.
Do emoji count as one character?
This tool counts by visible character (code point), which matches how most platforms count for their limits. A small number of complex emoji sequences are counted slightly differently on some platforms, but this is accurate for the vast majority of posts.
Where do these limits come from?
They're each platform's current published or commonly cited limit — 280 for X, 2,200 for an Instagram caption, and so on. Platforms do change these occasionally, so treat them as a close, current guide rather than a permanent guarantee.